<template>
    <div class="app-container">
        <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number-->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
<el-form-item label="讲师头像">
    <!-- 头衔缩略图 -->
    <pan-thumb :image="teacher.avatar"/>
    <!-- 文件上传按钮 -->
    <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
    </el-button>
<!--
v-show：是否显示上传组件
:key：类似于id，如果一个页面多个图片上传控件，可以做区分
:url：后台上传的url地址
@close：关闭上传组件
@crop-upload-success：上传成功后的回调 -->
    <image-cropper
                   v-show="imagecropperShow"
                   :width="300"
                   :height="300"
                   :key="imagecropperKey"
                   :url="BASE_API+'eduoss/fileoss'"
                   field="file"
                   @close="close"
                   @crop-upload-success="cropSuccess"/></el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
 </div>
</template>
<script>
import teacherApi from '@/api/edu/teacher'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default{
  components: { ImageCropper, PanThumb },
    data(){
        return{
            teacher:{
                     name: '',
                    sort: 0,
                    level: 1,
                    career: '',
                    intro: '',
                    avatar: ''
            },
          BASE_API: process.env.BASE_API,
          imagecropperShow:false,
          imagecropperKey:0,
        
          saveBtnDisabled: false 
        }
    },
    created(){
      this.init()
    },
    watch:{
      $route(to,from){
       
        this.init()
      }
    },
    methods:{
      close(){
        this.imagecropperShow=false,
        this.imagecropperKey=this.imagecropperKey+1
      },
      cropSuccess(data){
        this.teacher.avatar=data.url
        this.imagecropperShow=false
         this.imagecropperKey=this.imagecropperKey+1
      },

      init(){
        if (this.$route.params && this.$route.params.id) {
            const id = this.$route.params.id
            this.getInfo(id)
    }else{
            this.teacher={}
    }},
      getInfo(id){
        teacherApi.getTeacherInfo(id)
        .then(response=>{
         this.teacher= response.data.teacher
        })
      },
        saveOrUpdate(){
            if(!this.teacher.id){
              this.saveTeacher()
            }else{
              this.updateTeacher()
            }
        },
        updateTeacher(){
          teacherApi.updateTeacherInfo(this.teacher)
          .then(response=>{
            this.$message({
                type: 'success',
                message: '修改成功!'
            })
            this.$router.push({path:'/teacher/table'})
          })
        },
        saveTeacher(){
            teacherApi.addTeacher(this.teacher)
            .then(response=>{
                this.$message({
                type: 'success',
                message: '添加成功!'
            })
            this.$router.push({path:'/teacher/table'})
            })
          }
         }
       }
</script>